The report will come Tuesday before the stock market opens. It comes after its biggest nemesis, Verizon Wireless, reported strong results last week.
The quarter has lacked major drama for AT&T Inc. Investors are still wondering AT&T will be able to curb its outlays for iPhones, which it sells heavily subsidized, but the true test of that will come later this year, when Apple releases a new model.
For the second quarter, analysts expect AT&T to report adding a net of about 200,000 subscribers on contract-based plans, which carry the highest monthly fees. That compares with Verizon's gain of 888,000.